Antifriction apparatus



March 12, 1935. s. BRANTINGSON 1,994,424

ANTIFRICTION APPARATUS Filed May 2, 1955 INVENTOR Squid Brandi/2925072 BY w m WQOWMJL ATTORNEYS Patented Mar. 12, 1935 Application May 2, 1933, SerialgNo. 668,933

This invention relates to anti-friction apparatus for awdra-wer or the like;

One of the objects-of this invention is to-provide anti-friction apparatusfor a drawer or the r like which .may: be economically manufactured with a minimum amount-of labor: Another object is t to provide apparatus of theabove character which will be practical, simple and thoroughly durable. of the'above'character' which will act in a reenforcing-capacity forthe frame of a drawer or thelike; Another object is to provide apparatus of the abovdcharacter. which, while supporting a drawer within its frame-and allowing; easy access thereto, prevents weal? and tear. 'of l the: individual parts. Another-object is to provide apparatus-of the above character whicht-willsupport .andrawer more. firmly when itis. in an extended or open position. Another objectis-to provide apparatus of the above characteriwhichan-ay be easily installedin astandard construction without making anymaterial changes thereto.- Other objects *will be in part obvious and inpart pointed out here inafter. 1

The invention accordingly c'onsis'tsin the features of construction, combinations of elements, andarrangements-of parts as will be exemplified inthestructure to be hereinafter describemand the scope of the application of 1 which will :be indicatedin the following claims.

In. the accompanying drawing, in which isshown one of the. various-possible embodiments of my invention,

Figure 1 isza fragmentary perspective View of a deskor; the like, certainoi the parts thereof beingbroken away and having my anti-friction apparatus installedtherein; I

Figure 2 is avertical sectional the 1ine-,2*2of Figure. 1-, and

Figure' 3 is a-fragmentary: perspective View of one of the units of my anti-friction apparatus ready for installation. 1 7

view taken along Similar reference characters referto similar parts-throughoutthe several views -of.thedrawing.

As conducive to a clearer understanding'of'certain-featuresof" this invention it might here be pointed out that considerable diff culty has been experienced in constructing a drawer frame and drawer"soproportioned to each other that the. drawer-isfree to slide without being tunclesirably loose in theframe; Drawersof common constructic'nlare oftenzbuilt'toJfit:snugly-within:theframe. t'o'presenti a neat appearance and, when soiconv structed; are'r often subject? to: jamming while opening. Some of the various sliding arrange- Another'object is 'to provide apparatus ments which have been associated with drawers in the past. in-an' attempt to overcome some oft. the above-mentioned diiiiculties have been char-1 acterized by inferiority and complexity of iconstruction, making for difficult installation and,

large expenditures without material improvement in result. One of the objects-ofgthis invention is to provide anti-friction apparatus for a drawer or the like which will overcome the above-mentioned diiiiculties as well as manyothers. i r a Referring now to-the drawing in detail, there is shown in Figure l a desk or thelike generally imdicated at 10 having a drawerflgenerally-indicatedy at. 11 slidably disposed within a. frame generally indicated at 12.. Drawer lLissl-idablysupported; within frame 12 by way of my -anti-frictionunit generally indicated at 13 anda-unit ll3 substane tiallysimilarin construction and positioned-ion the opposite side of the draweras viewed Figure. 1. As is best shown in Figures 1 and 2, unit laineludes" two relatively slidable members. generally indicated at 14 and 15, respectively, andiwhich for convenience I shall term respectivelythe. track member and the slide member or slide..- Both are preferably made of sheet metahtracle member. 1 1 being preferably made of asomewhat heavier gage or thickness thanithe slide member, 15 and, as will be later' hereinafter. made clear, both members are'constructed so that they may, be. readily and inexpensively rolled or otherwise fabricated commercially. The two members will be seen in general to be of angular or right angled cross-section, slide member 15 nesting within the angle of the trackimember 14., Q

, Considering first now thedetailed construction of the track member 14 and'now referringto Figures 2. and 3, track memberisshaped to provide a side portion 14 and a bottom portion 14., these portions extending at right anglesto each other and presenting substantial areas of 'contactwi'th the inner faceof. the side portion- 16 and the up.- per face of the bottom portion 1'? of theframe.

'12, track member 14 thus'nesting vin the. right.

member as at 14, the track member is givenadditional longitudinally extending bends or angles and is thereby greatly strengthened and its rigidity increased. a g

Adjacent the upper part of the side portion 14*, the sheet metal thereof is rolled or bent inwardly and toward the right as at 14 whence it is continued upwardly as at 14 the latter extending in substantialparallelism with the side portion 14 Thus, the portion 14 is offset and is thereby spaced from the side wall part 16 of the frame, the portion 14 moreover, forming an overhanging ledge, a particular purpose of which will be pointed out hereinafter. In thus providing this ledge and offset, the sheet metal of the track member 14 is again given several bends or angles 7 and thus again is thereby greatly strengthened and its rigidity increased; The upper edge 14 like the overhanging ledge 14 extends horizontally and is parallel to the bottom portion 14*; it serves as is pointed out hereinafter, as a trackway or raceway for coaction with the slide member 15. s

The right hand end portion of the bottom portion 14 is rolled. or bent so as to be vertically offset from the bottom'part 17 of the frame, as"

at 14 the resultant bend or bends also increasing rigidity and strength while the right-hand edge 14 of the offset part 14 provides a trackway or raceway for coaction with the slide .15.

Considering now the general and preferred configuration of the slide member 15 and again referring to Figures'Z and 3, slide 15 is shaped to provide vertically extending portions 15 and 15 preferably extending'in the same plane, joined by an angular portion 15 that projects to I the left and that is so positioned that, when the slide 15 is assembled with respect to the track member 14, the ledge-like portion 15 comes underneath the overhanging horizontal part 14, with preferably a small clearance therebetween. The projecting rib 15 preferably" extends throughout the length of the slide 15 and the various bends that are made greatly strengthen and increase the rigidity of the slide member 15.

Upwardly from the vertical portion 15 the sheet metal of the slide 15 is rolled or otherwise suitably formed into a loop-like or hook-shaped portion 15d whose inner surface is preferably cylindrical and 'has a circumferential extent preferably greater than 180. Within this portion 15 are inserted suitable balls 20 (Figure 3), the balls being held against dropping out of the portion 15*, WhlOh'thuS forms a raceway therefor, because the portion 15 encompasses the balls by more than 180. Egress of the balls 20 from the portion 15 is prevented in a manner described hereinafter.

The shaping of the portion 15 (see Figure 2), as above described, will be seen to expose portions of the balls so that when the slide 15 is assembled to the track member 14, the uppermost edge 14 of the track member is engaged by the balls 20. As is better'shownin Figure 2, the raceway portion 15 of the slide is extended downwardly to form a lip 15 that is of suflicient length to overhang the offset portion 14 of the track member, being accommodated in the space between the side frame part 16 and the portion 14 that is provided by reason of the offset of the latter.

The slide 15 has a horizontal portion 15 joined to the vertical portion 15 by a looped portion 15 the latter lendingadditional strength and rigidity and also obviating a sharp angle so that when the drawer 11 is related to the slide 15, the need' for a close interfitting of the apices thereofis of the slide 15. Here again theballs 21 are encompassed by the portion l5 preferably by more than and are thus precluded from egress through thespace through which the raceway edge balls 21.

14 is presented for contact with the The'slide inember15 is preferably of a length I equivalent to that of the drawer 11 itself; the

track member 14, however, need be andhence preferably is only two-thirds as long as the drawer 11 and hence two-thirds as long asthe slide member 15; when thetrack member 14' is secured to the frame 12 of the disk or'other' struc' ture (see Figure 1) the forward end of-the track member 14 is positioned to terminateadjacent theforward end or part of the'frame- 12. limit relative sliding movement between'the slide 15 and the track member 14, I provide at a mid-'- point in the length of the track member 14 a stop 22 (Figures Z'and 3) and this stop I preferably form by cutting and bending'or-punching.

and bending a lip or lug out of the vertical portion 14a of the track member 14, the lug being bent inwardly at a suitable angle into the space (see Figure 2) between the portions 14 and 15 of the track and slide members respectively. This stop member 22 is at the midpoint in the length of the track member 14. 1

At the respectiveends of the slide member 15 and in the vertical portion 15 thereof I provide stops 23 and 24 (Figure 3) similarly formed, being in the form of lugs or lips cut and bent'out of the plane of the portion 15 and bent into-the space between the portions 14 and 15 (Figure 2), stop 22 being in the path of movement'of stops 23 and 24 depending upon which "direction the slide'15 is moved. I

'With the stops thus formed, both the track member 14 and the slide-member15 are reversi" ble in that they may be related to the left-hand side of the drawer 11,asis shown in full lines spects, utilizing of course two sets of track and V slide for each drawer.

Having secured the track member 14 in place V on the frame 12 (Figure 1), the slide 15 may next'be assembled to the track 14. The manner of assembly of these parts can be'better understood by reference to Figure 2; first the slide 15, held so that the vertical portion 15* ---15 thereof makes a suitable angle with the vertical, is moved downwardly to bring the longitudinally extending link 15 into the space between the offset portion 14' and the Wall part 16 of the frame 12, thus bringing the track or raceway portion 14f" into the space between the portions 15'? and 15 and thus bringing the balls 20 to rest upon the trackway l4. ,7 r

Next theslide member is swung in (Eliot-3h wise direction with the axis of the ube lilk'e race way 15 as a pivot, bringing the rib I5 underneath the ledge 14 and thus also hringnig the balls 21 intheraceway r5 into; engagementwith the raceway or track 14 the parts coming to rest in the positions shown Figure 2 This assen rhlywi l l also be seen to bring the stop 23 or the stop 24 into appropriatefunctional relationto the stop 22 on the track member 14 that stop z-z is thus in the path of movement of stop 23 or stop 24 as the slide member I5 is moved lengthwise of the track 1 4.

With a pair of track and slide members thus related the two slide members 15 of the pair are readyfor the reception of the drawer 11 the drawer 11 being setonto and thus carried by the two track members 15, as wilt be clear from the relation: of the drawer 1 1 to the" slide 1 5 as is better shown in Figure 2.

Preferably the drawer l l simply rests within the two facingslide members 1 5 and is permitted to be slid ther'eal'ong when desiredand for a purpose: more Gleam described hereinafter; insuch case, the slide member 15- is provided with a stop and so also i s-the drawer'l lfor coaction with such a stop; For unifor' ity of manufacture' and: to-p'ermit the-slide to function either as a; right-hand slideor' a left hand' slide, I-pr'eferamy provide two stop members on the slide and in Figure 3 thesestopmembe'rs" are indicated at 25 a-n'd being upstanding and positioned at the respective" ends of the slide member 15 itself; (Conveniently and preferably the stops 25--26 are: formed by bending upwardly, so as to projectupwardly from the tube=like raceway 15 end portions ofi'the'lip 1 5 as-is clearly shown in Figure 3, the stops being thusiinte'gr'al with the slide member 15. At the front end of the side of the drawer 11 ('see Figure I- seeure a stop member 2 7, so that about one-third of the drawer length is between: the front end of the drawer an'd'the stop member 27 the latter being in: the form of a blook' of any suitable mateti'al,

' such: as 'woomnber, or even metal, and Being securedto the si'de of the drawer 11 in: any suitable was, for exam le;- by a screw 28' (Figure 2 ThestopZ'l, moreover, is positi'one'd at'such a oint. that. when the: drawer 1 1 is nested with in its pair of slide members 15 the stop member. 27. extends above the raeeway' portion 15 of: theslide- (see: Figuresr arid12 l with a; Suit'-' able! clearance: therebetween andiis thus: also positionedsim line with: the stops 2e and 25" on: the

' slide member 15.. A' similar-stop; like" stop27fl is,

ofcourse, alsoz rovided a-t' theoth'er or the righthandi side or the drawer: 1 1 for coaction with a' stop" or stops" like the steps 25* and 26 on the right-hand slide member.

Before: considering: otherfeatures of action, it

is: noted: that I have: above mentioned the fact thatzr insert b'alls 20- and 21 in the tube-like" race ways: 15 and? 1 51 of the" slide' member 15': (see Figures and 39 I have' found-it satisfactory and convenient to arrange the balls as is bettershown=.inEigure"3 :from which it' will-be seen' that It insertinto: the respective" r'aoeways a" series of four, fiveyor'sixi (by-way of example) balls; then a spacerr 29;, illustratively of a length equivalent to'& the series; of balls just mentioned, the spacers being il'IthEffOIm of metaloyhn'ders' of aldiarneter large moughlnotf towa's'swhroughthe slot-like openingiin thei raoewawand preferahlysomewhat smaller than: the diameter of-' the ball's them selvestsuoh series -of halls I alternate with' soon with balls and spacers',-

the balls 01' balls and spacers,- thu's placed end to end inthe raceways are of a: length less than the length of the slide member 15 itself, for a purpose presently to be described. r To prevent egress of balls or of balls and spacer-S fromthe otherwise open ends of the raoeways; I insert into the end s of the racewaysa cylindfioa't plug- 30, there being four in number (see Figure 3) twofor each raceway. This plug may be se-' cured in place in any suitable manner, preferably as by spot welding, as at 31, to the sheet metal of the raceway portion of the slide 15 itself.

Considering now other features of actioh, let

it first be assumed thal'r the drawer ll (Figure 1) isclosed. The front ends of the track members lei substantially coincide with the front" ends of their respective slide members 15- and also subtantial'ly withthe front end of the drawer 11. 13f it is-desired toopen the drawer 11; it is pulled out" by means of the usual handle, whereupon slides" 15 move'as a unit withthe drawer 1-1, the halls' 20" rolling along both the fixed track p'or tion 14 (Figure 2) and theraceWay 15 of the slide mem ber 15, the balls 20' partaking of a movement of translation relative tothe raceway 15" it'slf,- this relative motion being permitted lo'eoaus'e 015 the preferred arrangement wherein: the raceway 1'5 is not completely filled with balls.

The opening movement of drawe'r' 11 with the" slides 15 continues until the rears't ops 24 (Figur'es' Z'and 3) on the slides 15 str iliethe fixed stops 22o'f the track members 14 Stops 22 being'- positioned at the midpoint of the" trackm'embers 1'4 and the latter being two-thirds as long as the drawer and two-thirds aelong as the" slide'm'emhers 1 5; the slide members 15 as well'as the drawer 11 find themselves withdrawn or projected forwardly'by a distance of substantially two-thirds thelength of the drawer'itself.

In most cases met within practice, sucha drawer itself is completelywithdrawmlthedrawer I will stillbe firmly and reliablysupported by two-- thirds of the length of the'slioles 15.

Upon closing the drawer 11", as by pushing it inwardly or to the left as viewed in" Figure 1', drawer l1 and slides 15, because of the lesser friction existing between the slides and the track members than exists betweenthe'dr'awer" 11= andthe slides, move inwardly asa unit until'theslides 15, at their rear orleft hand" ends as" viewed'in' Figure 1 strike the rear or innerm'o'stends" oftheframe 12, thus-halting the movement of the slides 1'5; thereupon the drawerll, at this point p'ro--- jecting one-thirdo'f its length, maybe c'o'mpletely pushed into closed'position by slidingit relative to the now stationary slides 15; the drawer: being halted byStbps ZTengaging stops 26;

During the action and operation of the ap paratus', a numberof unique and advantageous actions 'and ooa'otio'ns take place: For example; the weight-) or load of the drawer 1 1 istransmitted bm the slides 15 directly to the track portion l l of the track members 1a, through the raceway 15 and the balls 20; the offsetting, as by the bend 14: (Figure 2), of the raceway or track portion 14 brings the latter so' close to the vertical planeof the portions 15* and 15 through which the drawer-load is transmitted, that a dependable and reliable relative sliding action between slide and track members is achieved, without binding of the parts.

As the slide members 15 are projected out of the track members 14, for example, as shown in Figure 1, the slide members 15 are in part caused to function as cantilevers but the various bends orangles therein, all as above described, lend to the track members a very advantageous rigidity-and strength so that this cantilever action may be dependably achieved in practice without overstressing, bending or straining and binding of parts; moreover, due to the overlapping or interfitting of the portions 14 and 15 (see Figure 2), a relative tilting in a vertical plane of the slide or slides 15 relative to the. track or track members 14 cannot take place and thus a nice interengagement of the balls 20 with their respective races is maintained, even though, when the slides 15 are withdrawn and subjected to cantilever action, the load carried by the slides tends to tilt the inward ends of the slides upwardly and the outer- .most ends thereof downwardly. Alsothefeatures whereby these overlapping parts extend throughout the leng-thsof their respective members assures the dependable achievement of this action irrespective of the extent of overlapping betweena slide and a track member.

Insofar as such features of action and constructionas have just been described above are concerned,,I mayeven eliminate the sliding bearing arrangement provided at. the lower righthand portions of the slide and track member as viewed in Figure 2, and in such case the loop-like portion 15 of the slide 15 may be depended upon to take up any side or lateral thrusts, the latter causing the portion 15 to engage the'vertical portion of the angular part 14 of the track member 14. However, as already above indicated, I prefer to employ the uniquely correlated sliding bearing arrangement provided by the raceways 14 and 15 with the rollers 21 therebetween;

the latter insure nicety of action of the entire arrangement, particularly in that any side or lateral thrusts,'such as might be caused because the pulling or pushing force exerted on the drawer 11 is not exerted truly in linewith the intended path of movement of the drawer 11, are to be prevented from causing such a frictional sliding contact between the slide 15 andthe track member 14, as would have the effect of materially increasing the effort necessary to move the drawer. With the preferred construction as shown in Figuse 2, therefore, the drawer 11 may be easily and freely moved irrespective of whether or not the operator exerts the pulling or pushing thrust in line with the axis of the drawer 11 or at a substantial angle thereto.

Referring again to Figure-2, I proportion the parts so that the clearance between the raceway portion 15 and the bottom portion 17 of the frame, indicated at A, is greater than the clearance between the portion 141 and the horizontal portion 15 of the slide 15, this clearance being indicated at B. Thus, should any circumstance of load arise that would overstress the horizontal portion 15 of the slide, the difference in clearances just noted insures that the bottom or horizontal portion of thetrack 14 is contacted byth'e horizontal portion of the slide.15 andthustakes the load, rather than having the load transmitted by the portion 15 to the frame 'partl'l.

,Thus, great dependability'and ease of ,action are insured. Furthermore, the apparatus-may be readily installed. 'For example, the tracks 14 may be put in place independently vof;, the slides 15 and the latter then interengaged-with the tracks, in the manner hereinaboveidescribed;'

this is a great advantage in installation,;particu'-- larly in giving ready and'free access for themstaller to securethe track 14 to the'framejas by 1 v the screws 18-19 or the like. Moreover, thejnterchangeability ofthe parts makes it possible to avoid having toputup with the inconvenience of distinguishing between right-hand and;left';-,

hand members or parts and this is also anadvan tage not merely in installing but also in replacement or repair of the parts. a 1

Thus, it will be seen that there has been-provided" in this invention a structure inwhich the various objects .hereinabove noted, together-with:

many thoroughly practical advantages aresuccessfully achieved, Moreover, thepartsare of sheet metal and may be inexpensively and rapidly f fabricated as by rolling,{punching, stamping, or the like, andxstill' maintain great-strength and rigidity. It willthus beseenthat.thelapparatus so,

ditions of hard practical use.

As many possible embodiments may be made of the above invention and as many changes might be made in the embodiment abovesetfort'h; it is to be understood that all matter hereinbefore set forthor shown in the accompanying, drawing is to be interpreted as illustrative; and notin: a 1im-, iting sense. 1

1. In apparatus provided is well adaptedto meet the varying C0111 of the character described,

in combination,;a drawer frame, a pairof'trackmembers mounted upon the opposite sides of-the base 'of said frame, said track membersbeing substantially right angular .in cross-section, 'the upper edge of said track members-being offset from the side of said'frame and the inner edge of said track, members being spaced from the base of said frame, a pair of slides mounted. on said,

track members, said slides being substantially right angular in cross-sectiom the.top edge of said slides overlapping the top edgelof said traclc members and the inner-edgeof said slides'overlapping the inner edge of saidtrack members,ia

plurality of 'balls disposed along both edges. of

said track members and'retained in saidposition' by said overlapping edges of said slides, spacing means disposed-between groups of said .balls, the ends of the edge portions of said slides being' crimped over to retain said balls and said spacing means in saidposition, stopping means onsaid track members and said slidesto-limitthe rela tive movement therebetween, and adrawer. supported within said frameon' saidv slides andeapable of relative movement with respect tosaid slides.

2. In apparatus ofthe character described,

combination, a drawer frame, a pair of track members mounted upon the opposite sides of the base of said frame, said track members being substantially right angular Y in cross-section, :the' upper edge of said track members-being offset from the side of said frameand the inner edge of said track members being spaced from-the base of said frame, a pair of slides mounted ,on said track members, said slides beingsubstana tially right angular in cross-section, the top edge of .said'slides overlapping the top edge of said track, members and the inner edge of said slides overlapping the inner edge of said track members, a plurality ZIOf balls disposed along both edges of said track members and retained in said position by said overlapping edges of said slides,

spacing means disposed between groups of said balls, stopping means on said track members and said slides to limit the relative movement therebetween, and a drawer supported within said frame on said slides and capable of relative movement with respect to said slides.

33. In apparatus of the character described, in combination, a drawer frame, a pair of track members mountedlupon the opposite sides of the base of said frame, said track members being substantially right angular in cross section, the upper edge of said track members being offset from the sideof said frame and the inner edge of said track members being spaced from the base of said frame, a pair of slides mounted on said track members, said slidesbeing-substantially right angular in cross-section, the top edge of said. slides overlapping the top edge of said track members and the inner edge of said slides overlapping the inner edge of said track members, a plurality of balls disposed along both edges of said track members and retained in said position by said overlapping edges of said slides, spacing means disposedbetween groups of said balls, stopping means on said track members and said slides to limit the relative movement therebetween, and a drawer supported within said frame on said slides and capable of relative movement with respect to said slides, said slides being supportedout of engagement with said track members by said balls.

4. In an"anti-friction'dev1ce for drawers or the like, in combination, a track member substantially L-shaped in cross-section, and a sliding member substantially L-shaped in cross-section and mounted upon said track member so that the sides of said members are substantially parallel, said sliding member having its top edge overlapping the top edge of said track member to support it free from the base portion of said trackmem'ber; s 5'. In an anti-friction device for drawers or the like, in combination, a track. member substantially L-shaped in cross-section, a sliding mem ber substantially L-shaped in cross-section and mounted upon said track member so that the sides of saidmembers are substantially parallel, said sliding member having its top edge overlapping tlie top ed'g'e of said track member to sup port it free from thebase portion of said track member, portions of said substantiallyparallel sides being spaced from" each other, and stop means on's'a'id track member andsaid sliding member accommodated in the space between said spaced portions tolimit the relative movement thereof. v

6.In an anti friction device for diawersor the like, in combinatioma track membe'rsubs'tan tia'lly L-shaped in cross-sectiona slide member substantially L-shaped in cross-s'e'otion mounted on said trackmember'sothatthe sides of said members aresubstantially'parallel, anda pluralityfiof rolling members mounted onthetopedge of' said tracle member, the top edge portion ofs'aid slide membertoverlapping: s'aid rolling mem-- bers to retainthem in position,'said rolling memberg-supporting: said slidem'emb'er free from tlie base 'portionpf said track member.

L-shaped in cross section mounted upon the op- I posite sides of said frame, sliding vr'n'enribers substantially L-shaped in cross section having lip portions overhanging the upper edge of said track members, said track members supporting said sliding members free from thebase of said frame so that the sides of said members are substantial ly parallel, and a drawer supported upon-said sliding members. l

8. In apparatus of the character deseribed, in combination, a drawer frame, a pair of L'-shaped track members portions of which are in engagement with the sides of said frame, ii eaiis ci securing said track members in said position substantially adjacent the basefof said frame,- the upper edge of each of said track members being spaced from the side of said frame, a pair of sliding members substantially L-shaped in cross-section' and having their upper edge portions eve lapping the respective upper edges of said track members, said sliding members being supported by said track members free from the base of said frame, and a drawer supported by-said sliding members.

9. In apparatus of the character described,'in combination, a drawer frame, a pair of L-shaped track members portions of which are in engagement with the sides of said frame, means for securing said track members in said position substantially adj acent the base of said ianrei'tnecp per edge of each of said track members being spaced from the side of said frame, a pair or sliding members substantially L s hap'e'd in cross-se tion and having their upper edge portions overlapping the respective upper edges of said track members each to form a longitudinal enclosure, a plurality of rolling members disposed within said enclosures and supported respectively upon the top edges of said track members, said rolling members supporting said sliding members above the base of said frame, and a drawer supported by said sliding members.

10. In apparatus'of the character described, in combination, a drawer frame, a pair of track members portions of which are in engagement with the sides of said frame, means for securing said track' members in said position substantially adjacent the base of said frame, the upper edge of each said track members being spaced from the side of said frame; a pair of sliding members substantially right angular in cross-secede and having their upper edgeportions overlappingthe respective upper edgesof said traclimembers each to forrri a longitudinal enclosure, a plurality" of rolling member's disposed withinsaid eriiosiufes and supported respectively upon the top edges of said track members, said rolling members supporting said sliding members above the. base of said frame, the ends or saidsliding iiieriibrshaiking'means closing the ends of said'enclosure to retain said rolling members within their resp ctive enclosures, and a drawer supportedby-said sliding rnernbers.

l1; Inapparatus'of' the character described; in combination, a drawer frame; a pair of' track membersportions of which are in engagement w'ith'tlie' sides of said'frame, means for securing said track members in saidposition substantially adjacentthebase of's'aidframe', the upper edge of having their upper edge portions overlapping the respective upper edges of said track members eachto form a longitudinalenclosure, a plurality of rolling members disposed within said enclosures and supported respectively upon the top edges of said track members, said rolling, members supporting said sliding members above the base of said frames, drawer, supported by said sliding members, and stopping means on said sliding members and said track members for limiting the ,relative movement therebetween, said drawer adapted to slide on said sliding members upon the .opelfation of said stopping means.

12. Inapparatus of the character described,

.in combination, a drawer frame, a pair of track members portions of which are in engagement with the sides of said frame, means for securing said track members in said positionsubstantially adjacent the base of said frame, the upper edge of each of said track members being spacedfrom the side of said frame, a pairvof sliding members substantially right angular in cross-section and having theirupper edge portions overlapping the respective upper edges of saidtrack members each to form a longitudinal enclosure, a plurality of rolling membersdisposed within said enclosures and supported respectively upon the top edges of said track members, said rolling members sup- 13. In apparatus of the character described, in

combination, a drawer frame, a pair of track members each resting upon one side of said frame andthe base thereof, means for securing said track members in said position, the edge portions of said track members being spaced from the sides and bottom of said frame respectively, a pair of sliding members having edge portions respectively overhanging thetop edges of said track members, a plurality of rolling members disposed between said edge portions and the top edge portions of said track members to supportsaidsliding mem,- bers free from the base portions of said track members, said sliding members having their inner edges overlapping the respective inner edges of said track members, and a drawer supported upon said sliding members. 7 v

14. In apparatus of the character described, in combination, a drawer frame, a pair of track members each resting upon one side of said frame and the base thereof, means for securing said track members in said position, the edge portions of said track members being spaced from the sides and bottom of said frame respectively, a pair, of sliding members having edge portions respectively overhanging the top edges of said track members, a plurality of rolling members disposed between said edge portions and the top edge portions of said track members to support saidsliding members free from the base portions of said track members, said sliding members having their inner edges overlapping the respective inner edges of said track members a plurality of rolling members disposed between said inner edge portions of sa'idsliding members and the inner edge of said track members, and a drawer supported on said sliding members. l

15. In apparatus of the character described, in

combination, adrawer frame, a pair of "track members each resting uponone side of said frame track members in saidposition, the edge portions of said track members being spaced from the sides and bottom of. said frame respectively, a pair :of

sliding members having edge portions overhang ing the top edges of saidtrack members, a iplurality of rolling members disposed between'zs'aid' and the base thereof, meanszfor securingisaid.

bers, said sliding members 'having their- -innerf edges overlapping the inner edges of .said track members, a stop onsaid track members, a stop on said sliding members, said stops coacting tolimit the outward movement of'said sliding members, 7

and a drawer bers.

supported upon said, sliding mem- ,16. In apparatus of the characterdescribedfin combination, a drawer frame, a pair of track' members each resting upon one side of said frame and the base thereof, means for securing said track members in said position, the edge portions of said track members being spaced'fromthe sides and bottom of said, frame respectively, a pair of. sliding members. having edge portions overhanging the top edges of said track members, a plurality of rolling members disposed be tween said edgeportions and the top edge por-' tions of said track members to support said slide ing members free from the base portions of said track members, said sliding members having their inner edges overlapping the inner edges of said track members, a stop on said track members, a stop on said' sliding members, said coacting to limit the outward movement ofsaid stops sliding members, a drawer supported upon said sliding members, a stop on said drawer, and a second stop on one of said sliding members-in the path of said last-mentioned stop andadapted to limit the relative movement between .said C sliding members and said drawer. 17.:In apparatusof thecharacter described,

in combination, a drawer frame, a pair of track,

members'portions of 'whichare in engagement with the opposite sides ofsaid. frame substantially near the base thereof, the top portions of 7 I said track members being-bent inwardly and upwardly so that the edges thereof are spaced from the side's of said frame andso that portions of said .track members are substantially parallel to the base of said frame, a pair of sliding members having a substantially right angular cross-section, the upper edges of which overlap the upper edges of said track members to support said track members free from said .base portions of said sliding members extending outwardly un derneath said last-mentioned portions of said track members, and a drawer supported upon said sliding members,

18. In apparatus of the character described, in combination, a drawer frame, a pair of track members mounted upon the sides of said; frame substantially near the base thereof, thezupper, portions of said track members extending inwardly from said sides and thence upwardly to. form a surface substantially atl right. angles to saidsides and facing said; base, a pair of sliding members having their upper edge portions over-f hanging the upper edges of said traok' members,

said sliding members having substantially rightangular cross-sections and having formed there-1 said sliding members being supported free from the base of said frame, and a drawer supported upon said sliding members.

19. In apparatus of the character described, in combination, a drawer frame, a pair of track members mounted upon the sides of said frame substantially near the base thereof, the upper portions of said track members extending inwardly from said sides and thence upwardly to form a surface substantially at right angles to said sides and facing said base, a pair of sliding members having their upper edge portions overhanging the upper edges of said track members, said sliding members having substantially right angular cross-sections and having formed therein an outwardly extending ridge fitting under said right angle portions of said track members, said sliding members being supported free from the base of said frame, stopping means for limiting the relative movement between said sliding members and said track members, and a drawer supported upon said sliding members.

20. In apparatus of the character described, in combination, a drawer frame, a pair of track members mounted upon the sides of said frame substantially near the base thereof, the upper portions of said track members extending inwardly from said sides and thence upwardly to form a surface substantially at right angles to said sides and facing said base, a pair of sliding members having their upper edge portions overhanging the upper edges of said track members,

said sliding members having substantially right angular cross-sections and having formed therein an outwardly extending ridge fitting under said right angle portions of said track members, a plurality of rolling members disposed between said edge portions of said sliding members and the upper edge of said track members, means for retaining said rolling members in said position, said rolling members supporting said sliding members above the base of said frame, and a drawer supported upon said sliding members.

21. In apparatus of the character described, in combination, a drawer frame, a pair of track members mounted upon the sides of said frame substantially near the base thereof, the upper portions of said track members extending inwardly from said sides and thence upwardly to form a surface substantially at right angles to said sides and facing said base, a pair of sliding members having their upper edge portions overhanging the upper edges of said track members, said sliding members having substantially right angular cross-sections and having formed therein an outwardly extending ridge fitting under said right angle portions of said track members, a plurality of rolling members disposed between said upper edges of said track members and said edge portions of said sliding members, spacer members disposed between groups of said rolling members, said rolling members adapted to support said sliding members above the base of said frame, and a drawer supported upon said sliding members.

22. In apparatus of the character described,

.in combination, an L-shaped track member, an

L-shaped sliding member mounted upon said. track member so that the sides of said members are substantially parallel, said track member being made of sheet metal and being bent along its length to provide a longitudinally extending downwardly facing ledge, rolling members disposed between said sliding member and said track member to hold said sliding member in suspended relation with respect to said track member, and means onsaid sliding member engaging underneath said downwardly facing ledge for preventing movement in an upward direction of said sliding member relative to said track member, thereby preventing disruption of said suspended relation between said two members.

23. In apparatus of the character described, in combination, L-shaped track members, L- shaped sliding members mounted respectively upon said track members so that the respective sides of said members are substantially parallel, said track members being made of sheet metal and being bent along their respective lengths to provide longitudinally extending downwardly facing ledges, said sliding members being bent along their respective lengths to provide longitudinally extending upwardly facing ledges, rolling members disposed between said sliding member and said track member to hold said sliding member in suspended relation with respect to said track member, said ledges holding said sliding members and said track members in substantially parallel relation when said sliding member is moved along said track member and means occupying the space underneath said ledges adapted to limit the relative sliding movement between said sliding member and said track member.

SIGURD BRAN'I'INGSON. 

